Home / 149,749.96-206,653.36-81,766.72

Finding the Fourth Proportional to 149,749.96, 206,653.36 and 81,766.72

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Solution

The fourth proportional to 149,749.96, 206,653.36 and 81,766.72 is: 112,837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,749.96 : 206,653.36 = 81,766.72 : x
  2. Step 2: Convert to fraction form
    149,749.96/206,653.36 = 81,766.72/x
  3. Step 3: Cross multiply
    149,749.96x = 206,653.36 × 81,766.72
  4. Step 4: Simplify right side
    149,749.96x = 16,897,367,424.18
  5. Step 5: Solve for x
    x = 16,897,367,424.18/149,749.96
  6. Step 6: Final answer
    x = 112,837.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.